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Myelin proteolipid protein intron 1 sequences do not appear to enhance myelin proteolipid protein gene transcription



Myelin proteolipid protein intron 1 sequences do not appear to enhance myelin proteolipid protein gene transcription



Developmental Neuroscience 20(6): 552-558



Sequences from the first intron of the mouse myelin proteolipid protein (PLP) gene were examined for their ability to modulate PLP gene expression. Glial (N20.1) or nonglial (NIH 3T3) cells were transiently transfected with constructs that contained 1.4 kb of PLP promoter sequence driving luciferase reporter gene expression, as well as various portions of PLP intron 1 DNA. Although these same PLP intron 1 fragments enhanced reporter gene expression from a heterologous basal promoter in a previous study, the results reported here demonstrate that they do not augment PLP promoter activity. Thus, the regulation of PLP cell-type-specific expression, conferred by the first intron, appears to be mediated by an enhancer-independent mechanism.

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Accession: 011032513

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PMID: 9858845


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